It's ok to not have the answer. I believe one of the bravest things you can do is boldly embrace the unknown. Accept your fears. All fear is manageable. When fear is not managed and tuned into fuel and fire, it leads to doubt, hesitation, and procrastination. Fear will play tricks on you and make you think that you're not ready. Courageous people feel fear too; they just embrace it and use it to fuel them. Fear is contagious, but so is courage. Continue to move forward. A clear mission does not always have a clear path.